Door-screen.



B. B. PERKINS.

DOOR SCREEN.

APPLICAHON FILED D5014. m1.

1 ,274,933 Patented Aug. 6, 1918.

" 7 l/wmron j V U TED STATES BERT BRAYTON PERKINS, 0F MONTICELLO, MI N NESOTA.

noon-SCREEN.

Application filed December 24, 1917. Serial No. scams.

lar use. The invention relates to'the type of screens in which inlet openings are provided to the interior of the screen, for the entrance and trapping of flies.

Objects of the invention are to provide a screen of the type indicate'd, improved in various particulars-with respect to strength and simplicity and particularly with regard to the manner of emptying the screen of the dead flies.

Reference is to be had to the accompanying drawings forming a partof this specification in which similar reference characters indicate corresponding parts in all the views, it being understood that the drawings are merely illustrative of one example of the invention.

Figure 1 is a front view of a screen door embodying my invention;

Fig. 2 is a transverse vertical section on the line 2'2, Fig. 1;

Fig. 3 is a horizontal section.

In carrying out my invention-in practice, the door or window frame 10 may be made up in any approved manner to present an a 3, andthe screen is held by turn-buttons 14:

at the topand sides, said buttons being fastened by screws 15 or the like. At the bottom the screen and the opposed members of the frame are not beveled but are squared as indicated in Fig. 2 and the bottom rail of the screen has a pin 16 received in a pin hole or recess 17 in the frame 10.

Each screen 11 has a front covering 18 and the back-a mesh covering 19 and held in place in lihe usual manner as by beads 20. The coverings 18. 19 of the screen are of wire mesh or equivalent foraminous material. A

centralvertical bar 21 is provided in the screen 11 between the front and rear coverings 18, 19, said bar extending from the Specification of Letters Patent.

can be considerabl .parture from the splrit of the invention Patented Aug. 6, 1918.

cated at 23 in Figs. 2 and 3. The arrangement is such that flies will tend, in'moving over the screen" surface, to enter through the openings 22 to the interior space between the front and rear coverings 18, 19 to be thereby trapped. In order to facilitate the emptying of the screen of the dead flies, I form one of the rails thereof, preferably the top-rail, with outlet openings 24, one for each compartment of the screen. The openings extend completely through the rail in which they are formed, that .is to say, from an interior chamber to the exterior of the screen. The discharge openings 24, it will be noted, are in the top rail of the screen 11 at the corners, whereby when the screen is removed and the same jarred by striking the corner against the ground. or other surface, flies will readily find exit at said openings. The

openings requireno special closure means because they are so located that when the screen is in position in the doorfr ame, the latter will serve to effect closureof the openings. As clearly seen in Fig. 2 with the screen removed by the turning of the buttons 14, the up-ending of the screen will permit of the flies being jarred from each compartment.

The central vertical bar 21 adds strength to the screen and affords support and backing to the screen material at the back and front.

I would state in conclusion that while the illustrated example constitutes a practical embodiment of my invention, I do not limit myself strictly to the mechanical details herein illustrated, since manifestly the same varied, wlthout' deas defined in the appended claims.

Having thus described my invention, 1

claim as new, and desire to secure by Letters Patent:

1. A door including a door frame having an opening, and a removable screen fitting said opening, said screen including cover- ..ing material i at the front and back of the screen spaced to form a chamber within the screen, one of the coverings being foraminous and having openings therein constitut-. ing inlets for flies leading to the said chamber, a rail of the screen having an opening extendin from said chamber to the exterior for the discharge of dead flies, and the door frame when the removable screen is in position therein constituting a closure for the said discharge opening.

2. A door including a door frame having an opening, and a screen frame removably fitting said opening, screen material secured on the latter frame the top and sides of the screen frame and the opposed members on door frame being beveled, turn-butto'nson the door frame at the top and the sides to retain the screen frame in position, and depending pins on the bottom rail of the screen frame, said door frame having pin holes receiving said pins.

3. A door including a frame having an opening to detachably receive a screen, and

a screen removably fitting said opening, foraminous covering material on the screen at the front and back, an approximately central vertical bar in the screen extending from the top to the bottom thereof between the front and back coverings and dividing the screen into chambers, the material at the front of the screen having transverse openings extending across the two chambers con- 'stituting inlets for flies, the material of the covering at the said inlet openings at the top and bottom of the latter being extended inwardly into the said chambers, and the top rail of the screen having an opening in each compartment at the corner for the discharge of dead flies, said discharge'openings extending Vertically from the chambers through the said top'rail, and the top of said frame When the screen is in position constituting a closure for said discharge openings.

BERT BRAYTON PERKINS. I 

